Re: POSIX ruling on up-to-date vs. identical timestamps

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On Thu, 21 Aug 2014, Eric Blake wrote:

The POSIX recommendation was therefore that GNU should change its
behavior to act like HP-UX, and consider identical timestamps as
out-of-date, because the standard will be fixed to allow HP-UX behavior.

A change like this may result in some builds which never complete (or take much longer) because the timestamp rules require that something be rebuilt (tail chasing). This is particularly a problem for recursive builds which may enter the same directories multiple times.

Bob
--
Bob Friesenhahn
bfriesen@xxxxxxxxxxxxxxxxxxx, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/

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